Fan starts to blow fast after working app. 1 hour

[krakenadler]

Hi
I replaced the HD in an iMac 24" 2009. Of course, the fan was blowing like hell with the new HD, I installed Macs Fan Control with the options on the attached picture.

It works fine, but after an hour app. the fan begins to blow harder again. I also can see, that the recent level of the CPU is getting higher and higher right now.

Any idea what could help or what I'm doing wrong?

Thanks
Tom

PS:

Macs Fan Control 1.3.2
iMac8,1
Intel(R) Core(TM)2 Duo CPU E8435 @ 3.06GHz[100]
Mac OS X 10.10

Fans:
ODD-min{700}curr{698}max{4800}mode{0}
HDD-min{1100}curr{1220}max{6000}mode{0}
CPU-min{1200}curr{1805}max{3600}mode{2,WDC WD20EARS-42S0XB0,42,52}


TempSensors:
TA0P (Ambient) - 21.125, 21.125
TC0D (CPU Diode) - 35.25, 35.25
TC0H (CPU Heatsink) - 35.5, 35.5
TC0P (CPU Proximity) - 38, 38
TG0D (GPU Diode) - 53.5, 53.5
TG0H (GPU Heatsink) - 40.625, 40.625
TG0P () - 41, 41
TH0P (HDD Proximity) - 43.25, 43.25
TL0P (LCD proximity) - -1, 130
TO0P (Optical Drive) - 38, 38
TW0P (Airport Card) - 52.5, 52.5
Tm0P (Mem Controller) - 38.25, 38.25
Tp0P () - 51.7461, 51.7461


Disk drives:
WDC WD20EARS-42S0XB0 - 44

[krakenadler]

Edit: the recent level of the CPU is getting higher and higher right now.

Any idea?

Tom

[step19]

Hello krakenadler,

why you assigned HDD sensor to CPU fan?
the CPU fan control CPU/GPU/PSU sensors (iMac 8,1).

Try to assign:
ODD fan - auto or Optical drive
HDD fan - HDD proximity
CPU fan - GPU Diode or CPU Diode (normally the GPU temp is more critical)

In this mode I found a good equilibrium on my iMac 2008
Have a nice day.

[krakenadler]

Thanks, it seems to work!

[krakenadler]

Foto-27.10.jpg (18.81 KiB) Viewed 6658 times

Hi

today I found this settings. Any suggestions what to edit?

Thanks
Tom